Rev. F. R, Simpson on Coelopa friyida. 



Notice of Codopa frigida, ohserved at North Sunderland, on 

 February 15th, 1861. By Rev. F. R. Simpson. 



At North Sunderland, on a bright clear day, with the snow 

 scarcely off the ground and the thermometer at S2° Fah., we 

 were visited with a swarm of Flies, (Coslopa friyida). They 

 covered the front of my house, and were thinner on the south 

 side of the church and do not seem to have extended further 

 eastward ; but so dense a swarm crossed the village to the 

 west, as to attract the attention of children and induce them 

 to give chase. The wind was due south, and the course of 

 the Flies was nearly due north. 



Regarding these Flies Mr. Hardy states that they are 

 identical with Codopa gravis of Haliday, Ent. Mag. i. p. 167. 

 They inhabit marine rejectamenta in vast numbers, at all 

 seasons. The sea had been rough from the 9th to the 12th 

 of February ; this and the snow may have roused them from 

 their haunts. They seldom appear inland; at Holywood 

 near Belfast Bay, Mr. Haliday sometimes found them abun- 

 dant on the flowers in the orchard. At Penmanshiel, three 

 miles from the sea, Codopa simplex (Hal.), frequents, now 

 and then about April, the blossoms of the sallow. 



